weixin_43547832的博客

一、字符串 1.字符串修改大小写 name = "jack" print(name.title()+"\t"+name.upper()+"\n"+name.lower()) title() 字符首字母大写 upper() 字符全部大写 lower() 字符全部小写 2.删除空白符 name = " jack " print(name.rstrip()+name.lstrip()+name...